::UPDATE:: Tweaked the axles (wheel pins) - hopefully they will not break as easily and the wheels still go on without issue A print in place Akira inspired bike (Shotaro Kaneda's bike) with articulable steering, and utilizes two 625z bearing plastic wheel pulleys My particular pulleys were 10.4mm x 24mm No support needed It's a good calibration test object as it has some bridging, tight spacing, etc, and it takes less than 1 1/2 hours to print at 40mm/s.